The effect of co-dopant addition on the properties of Ln(0.2)Ce(0.8)O(2-delta) (Ln = Gd, Sm, La) solid-state electrolyte
dc.creator | Pikalova, E. Y. | en |
dc.creator | Maragou, V. I. | en |
dc.creator | Demina, A. N. | en |
dc.creator | Demin, A. K. | en |
dc.creator | Tsiakaras, P. E. | en |
dc.date.accessioned | 2015-11-23T10:45:37Z | |
dc.date.available | 2015-11-23T10:45:37Z | |
dc.date.issued | 2008 | |
dc.identifier | 10.1016/j.jpowsour.2008.02.003 | |
dc.identifier.issn | 0378-7753 | |
dc.identifier.uri | http://hdl.handle.net/11615/32266 | |
dc.description.abstract | The present work aims at the investigation of Ln(0.2)Ce(0.8)O(2-delta) (where Ln = Sm, La, Gd) structural and electrical properties when in the Ln sub-lattice, Ba2+ and Sr2+ with ionic radii 1.42 and 1.26 angstrom, respectively, are introduced. The conductivity measurements were held both in air and in H-2 + 3%H2O atmosphere using the 4-probe dc technique at the temperature range of 600-900 degrees C. Among all the samples, the highest value of electrical conductivity is obtained in the case Of (Sm0.75Sr0.2Ba0.05)(0.2)Ce0.8O2-delta, both in air and in hydrogen atmosphere. In the case of H-2 + 3%H2O the conductivity of the co-doped compounds increases in comparison with air. Moreover, the dependence of conductivity on the oxygen partial pressure, measured at the P-O2 range of 0.21-10(-22) atm, showed that the electrolytic area of alkaline-earth metals doped Ln(0.2)Ce(0.8)O(2-delta) is considerably enhanced, as predicted by the theory. Finally, by comparing the thermal expansion coefficients of the different materials (TEC), the thermo-mechanical compatibility between the co-doped and the other cell components was also investigated. (c) 2008 Elsevier B.V. All rights reserved. | en |
dc.source.uri | <Go to ISI>://WOS:000257036600002 | |
dc.subject | doped ceria | en |
dc.subject | electrical conductivity | en |
dc.subject | thermal expansion coefficient | en |
dc.subject | co-dopant | en |
dc.subject | DOPED CERIA | en |
dc.subject | IONIC-CONDUCTIVITY | en |
dc.subject | ELECTRICAL-PROPERTIES | en |
dc.subject | CERAMICS | en |
dc.subject | TRANSPORT | en |
dc.subject | STABILITY | en |
dc.subject | SYSTEMS | en |
dc.subject | OXIDES | en |
dc.subject | Electrochemistry | en |
dc.subject | Energy & Fuels | en |
dc.title | The effect of co-dopant addition on the properties of Ln(0.2)Ce(0.8)O(2-delta) (Ln = Gd, Sm, La) solid-state electrolyte | en |
dc.type | journalArticle | en |
Fichier(s) constituant ce document
Fichiers | Taille | Format | Vue |
---|---|---|---|
Il n'y a pas de fichiers associés à ce document. |